You could have put those cards together already, of course, but drawing cards is still generally better than not drawing them
They are designed to create a luxury market that, and in effect, helps keep the price of regular cards lower for the average player
For example: Treasure Energy, which can be immediately attached to a Pokemon to provide one Colorless Energy if its a Prize Card that youve just taken
The Floodborn and other types of cards feed into the wider story unfolding through Lorcana and I cant wait to see whats next
That incentivizes you to spread your auras across a wide swath of creatures rather than going all in on a single target
Youll notice, for instance, that this list is entirely comprised of mythic cards